SoDA: Enabling CDN-ISP collaboration with software defined anycast

Wichtlhuber, Matthias; Kessler, Jan H.; Bücker, Sebastian; Poese, Ingmar; Blendin, Jeremias; Koch, Christian; Hausheer, David

doi:10.23919/ifipnetworking.2017.8264847

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…1); and vice versa for the hyper-giant [21], [45], [46]. Several recent studies presented promising approaches to improve information sharing and cooperation [16], [21], [47]- [50]. Moreover, it has been shown that major players adopt such approaches for information exchange [16], which we argue can and should be extended to account also for topological flexibilities.…”

Section: B Business-related Trendsmentioning

confidence: 69%

On the Benefits of Joint Optimization of Reconfigurable CDN-ISP Infrastructure

Zerwas

Poese²,

Schmid

et al. 2022

IEEE Trans. Netw. Serv. Manage.

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ISP networks have become a critical infrastructure in our society. Traffic in these networks is growing and is increasingly dominated by a small number of large CDNs connecting at multiple locations. Simultaneously, the networks are becoming more flexible, in terms of routing, CDN user mapping, and also regarding the IP topology: emerging optical technologies allow to flexibly reconfigure the network.This paper studies the potential gains of these reconfiguration flexibilities. The idea is to make CDN-ISP infrastructure demandaware, that is, to re-optimize it towards the changing end-user demands over time. We present an optimization framework and conduct an extensive evaluation using data from a large European ISP. We find that such a reconfigurable infrastructure has indeed a high potential: by leveraging spatial and diurnal traffic patterns, the efficiency of ISP networks and CDNs is improved significantly. Specifically, the required backbone capacity is reduced by 15% while reducing path lengths by 30%, on average and during the critical peak hour. Moreover, such infrastructures can leverage re-optimizations during specific events, like the COVID-19 pandemic, and under link failures. We optimistically assume a cooperative environment of ISPs and CDNs, and we conclude by discussing trends that foster the identified benefits in practice.

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Section: B Business-related Trendsmentioning

confidence: 69%

On the Benefits of Joint Optimization of Reconfigurable CDN-ISP Infrastructure

Zerwas

Poese²,

Schmid

et al. 2022

IEEE Trans. Netw. Serv. Manage.

Self Cite

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“…Multiple studies contribute towards an understanding of these infrastructures, including their performance [5,10,24,25], and their request mapping mechanisms [11,28]. Further optimizations of request mapping mechanisms are proposed, e.g., based on anycast [11,14], by enabling ISP-CDN collaboration [26], or both [29]. Using multiple CDNs can offer cost reductions (e.g., due to different prices to serve content at different times, or due to traffic volume contracts) and higher availability (e.g., in high-load scenarios).…”

Section: Background and Related Workmentioning

confidence: 99%

Dissecting Apple's Meta-CDN during an iOS Update

Blendin¹,

Bendfeldt

Poese³

et al. 2018

Proceedings of the Internet Measurement Conference 2018

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Content delivery networks (CDN) contribute more than 50% of today's Internet traffic. Meta-CDNs, an evolution of centrally controlled CDNs, promise increased flexibility by multihoming content. So far, efforts to understand the characteristics of Meta-CDNs focus mainly on third-party Meta-CDN services. A common, but unexplored, use case for Meta-CDNs is to use the CDNs mapping infrastructure to form self-operated Meta-CDNs integrating thirdparty CDNs. These CDNs assist in the build-up phase of a CDN's infrastructure or mitigate capacity shortages by offloading traffic. This paper investigates the Apple CDN as a prominent example of self-operated Meta-CDNs. We describe the involved CDNs, the request-mapping mechanism, and show the cache locations of the Apple CDN using measurements of more than 800 RIPE Atlas probes worldwide. We further measure its load-sharing behavior by observing a major iOS update in Sep. 2017, a significant event potentially reaching up to an estimated 1 billion iOS devices. Furthermore, by analyzing data from a European Eyeball ISP, we quantify thirdparty traffic offloading effects and find third-party CDNs increase their traffic by 438% while saturating seemingly unrelated links.

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Proactive Replication Scheme for Resilient Content Delivery in Software Defined Networks

Krishna

Lorenz

2019

2019 IEEE Global Communications Conference (GLOBECOM)

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SoDA: Enabling CDN-ISP collaboration with software defined anycast

Cited by 6 publications

References 13 publications

On the Benefits of Joint Optimization of Reconfigurable CDN-ISP Infrastructure

On the Benefits of Joint Optimization of Reconfigurable CDN-ISP Infrastructure

Dissecting Apple's Meta-CDN during an iOS Update

Proactive Replication Scheme for Resilient Content Delivery in Software Defined Networks

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